Error sources analysis and optimizing for online detection system of automobile air flowmeter

In this paper, the basic working principle of the system were introduced, affecting the test results of the error factors are analyzed and corresponding optimizing programs were proposed. By comparing the experimental data before and after Optimizing, it was found that, after optimizing, flow control accuracy and stability of the system has been further improved, the system´s error detection accuracy and stability of the repeatability have got more obvious improvement.